html,body{
	margin: 0px;
	padding: 0px;
}

#app{
	width: 800px;
	margin: auto;
}

div#entry,
div#operate,
div#show{
	padding: 10px;
}

div#operate>button.hide{
	display: none;
}

button.active{
	background-color: #008000;
	color: #ffffff;
	border-color: #008000;
}


table#tab{
	width: 800px;
	border-collapse: collapse;
	border: 1px solid red;
}
table#tab th,
table#tab td{
	border: 1px solid red;
}
table#tab td button{
	cursor: pointer;
}
table#tab.hide{
	display: none;
}

/* 精妙部分 */
table#tab.geHangBianSe>tbody>tr:nth-child(odd){
	background-color: #ddd;
}
table#tab.yiRuBianSe>tbody>tr:hover{
	background-color: pink;
}
table#tab>tbody>tr:first-child>td>button:first-child{
	cursor: not-allowed;
}
table#tab>tbody>tr:last-child>td>button:last-child{
	cursor: not-allowed;
}
/* 精妙部分 */


div#info{
	width: 300px;
	height: 300px;
	background-color: rgba(0, 0, 255, 0.5);
	color: #ffffff;
	text-align: center;
	line-height: 300px;
	font-size: 20px;
	
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	margin: auto;
	
	display: none;
	
}

div#info.show{
	display: block;
}


